Sectional mold.



PATENTED APR. 30, 1907.

T. C. STEIMER.

' SEGTIONAL MOLD. APPLICATION FILED rm; 27 1906 JZZ.

Atty.

THEODORE C. STEIMER, OF BUCKHANN ON WEST VIRGINIA.

SECTIONAL MOLD.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed February 27,1906- Seriel No. 303,268.

To all whom it may concern.-

Be it known that I, THEODORE C. STEIMER,

' a citizen of the United States, residing at Buckhannon, in the county of Upshur and, State of Vest Vir nia, have invented certain new and useful fmprovements in Sectional Molds, of which the following is a specification.

My invention relates to the art of molding articles from plastic material, such as molten lass, and particularly to molding articles having irregular surfaces, which cannot be drawn directly, but require a sectional mold opening away from the surface.

- The objects of the invention are, to separate the parts of the mold from the article in a true radial direction, to avoid marring the surface; to open and close the parts automatically; to utilize the pressure of the plunger and its rin to press the joints of the mold closer toget er; to render the parts easily interchangeable and reduce the cost ;'to provide superior means for operating, and to generally improve, the construction and action of sectional molds, These objects and other advantages to appear hereinafter, are attained by the structures illustrated in the accompanying drawings.

Figure 1. is a plan view of a mold desi ned for an imitation cut glass tumbler suc as shown in Fig. 4; Fig. 2 is a central vertical section of the mold in place on a holder and the glass being pressed therein by a plunger; Fig. 3 is a plan view of the mold after being opened, and Fig. 4 is a central vertical section the mold shown'open and the finished article bein automatically ejected ,Fig. 5 is a detache detail showin the cams for opening the .mold and ejecting the article, as in This swinging feature also makes it impossible' to press certain forms having true radial surfaces, and is otherwise objectionable.

Inlthe drawing I have shown a holding socket 6 having inclined interior surfaces with undercut grooves in which a series of slides 7 move and are held therein by a tongue-and-groove joint, as shown in Fig. 1. On, the slides 7 are the sections 9 of the mold, removably attached by bolts 9. When the slides and the'secti'ons are shoved downward they close tightly together along their vertical joints, and the bottom of the mold is formed by a head 10 supported by the head 11, which latter fits within an openin in the bottom of the socket 6 and is provide with a split tubular shank 11 resting in a support 14. Also seated within the heads 10 and 11 is an ejector and valve head 12 which is carried on a shank 12 within the tube 11. In pressing the glass 13 into the mold the latter may be conveniently supported with other like molds ,on a large traveling ring 14 whose base 15 may be supported and moved as desiredby any convenient mechanism to pass the mold under a plunger 19.

At the proper point along the travel of the ring 14 a block 16 is placed stationary, and it carries the two opening cams 17 and 18, as

shown in Figs. 4 and 5. The plunger 19 has the-usual cover ring 20, held'down by the usual spring plate 21; after it has entered the article and pressed it as shown in Fig. 2, and these parts have been withdrawn, the support 14. carries" the mold upon the cams 17 and 18. The two shanks 11 and 12 are thereby raised together until the bottom and the side sections of-the mold have been all raised together to their open positions, as shown in Fig. 4the slides 7 moving both upward and outward by reason of the slant of the guide socket 6. The action of cam 17 now ceases, and the parts of the mold having been entirely separated from the article by direct radial motion, the cam 18, working in the slot 11 of the tube 11, continues to act upon the rod 12, and with the head 12 raises the finished article 13 entirely out of the mold, where it ma be cooled and lifted off.

The mold may e used as a hand mold, and in some cases it may be desirable to invert the mold to eject the article. It will he observed that the parts of the mold will open by gravity, in a manner similar to that above described. Inorder that the sections may move together, I provide guide pins between the joints of the mold, as indicated at 24. in Fig. 3. In order to revent the sections coming out of the mold, I may also use a stop 22 as shown in Fig. 4, which is attached ICC . the spring tomary. 4

It will be noted that the downward pressure both of the ring and plunger 19 and of plate 21, tend to close the vertical joints of the mold tighter; also that the mold sections open easily and uickly and in opening move in a true radial irection with relation to the article. The operation is entirely automatic, and the mold is equally "adapted to use in any otherpower machine.

Y facture of any particular article.

. whereby downward pressure by the plunger Any desired means for removing the article after the mold is opened may be used, and

in general it will be understood that my invention is not limited to the details of the construction shown, nor use in the manu- Other advantages will readily occur to thosefamiliar with the art.

Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent, is the following:

1. A glass pressing mold for co-operation with a lunger and press ring, comprising a socket having. inclined faces, and mold sections radially divided and slidingly attached on said inclined surfaces to close and open, whereby the pressure of the ring and p unger closes the mold. 2. The combination with a holder having inclined faces, of a mold comprising sections slidingly attached on said faces, and.means for raising the bottom of the mold and there by opening the sections by sliding them on said surfaces, substantially as described.

3. A press mold composed of sections divided on radial lanes and having inclined outer faces and a holder for the sections having inside inclined supporting surfaces,

on the mold sections will close them in ra ial direction, substantially as described.

4. The combination of aholder socket having inclined guide-ways, and a plurality of press mold sections divided on radial lanes and sliding on said guide-ways, and a apted to close radially, and means to open the mold by sliding the sections upwardly on the guide-ways.

5. The combination with a holding socket having inclined guideways, of a mold composed of sections engaging saidguideways, and a double movable bottom for the mold, of which one part is adapted .to lift the sections and the other part to eject the article enga ing the same and adapted to be pressed toget er by vertical pressure on the mold,

and vertically operatmg means toopen the I mold and eject the article.

8. In a mold the combination of a socket ing a socket having inclined guides, bearing plates in said guides, and co-operating radially divided mold sections-removably attached to the'said bearing plates, whereby the mold sections are interchangeable.

10; The combination with a sectional mold adapted to be opened by vertical movement of the parts, of a movable bottom partly supporting and adapted to raise said parts,

an ejector spindle working through the bot.-'

11. A sectional mold comprising parts adapted to be closed by downward pressure thereon, an inclined holder supporting said parts, and a movable bottom adapted to engage and raise the sectional parts in the holder and simultaneously raising the article as the mold opens, substantially as described.

12.,A radially divided sectional mold,

combined with a support having guides en-- gaging and adapted to open the sections of the molds, by sliding movement therein, in an upward and outward radialdirection, substantially as described.

13. A glass pressing mold comprising radially divided sections, a movable bottom engaging the sections, and a support the sec tions and support having inclined engaging faces, whereby the sections are opened when pushed upwaid in the. support.

In testimony whereof I have hereunto signed my name in the presence of the two. subscribed Witnesses.

THEODORE C. STEIMER.

Witnesses:

F. W. H. CLAY, CHAS. LEPLEY. 

